听一段对话,回答第11~12小题。
() 11. Why does David learn about nature from books?
A. Because books allow him to learn about views in different times and places.
B. Because he can read them whenever he wants to.
C. Because it's quick and easy.
() 12. How does Mary learn about nature?
A. By email.
B. Through the internet.
C. By travelling.

11.A 12.B

听第一篇短文，回答第13～15小题。
Butterflies
The first stage
A female butterfly 13 on the leaf.
The second stage
The worm likes eating14.
The third stage
The cocoon(茧）is mostly 15 or green.
The last stage
The butterfly can't fly well at first. It needs lots of practice.
（）13. A. plays games B. lays eggs C. sleeps
（）14. A. leaves B. fruit C. vegetables
（）15. A. black B. blue C. brown

13.B 14.A 15.C

听第二篇短文，回答第16～20小题。
（）16. How did the luna moth(月形天蚕蛾) get its name?
A. The colour of the luna moth is yellow.
B. The shape of the luna moth is round.
C. The spots on luna moth's wings look like the moon.
（）17. Where do the luna moths live on the earth?
A. In North Africa.
B. In North America.
C. In South America.
（）18. What role do you think the spots on the wings play?
A. The spots beautify their bodies.
B. The spots attract other moths.
C. The spots may protect the moth from predators(捕食者).
（）19. How long can a luna moth live?
A. Up to 5 days.
B. Up to 10 days.
C. Up to 12 days.
（）20. How does the luna moth get energy during its short life?
A. It eats leaves.
B. It drinks water.
C. It stores energy as a caterpillar.

16.C 17.B 18.C 19.B 20.C